地域研究与开发
地域研究與開髮
지역연구여개발
Areal Research and Development
2014年
1期
52~57
,共null页
复杂性 空间异质 城乡道路网 武汉城市圈
複雜性 空間異質 城鄉道路網 武漢城市圈
복잡성 공간이질 성향도로망 무한성시권
complexity; spatial heterogeneity; urban-rural road network; Wuhan metropolitan area
基于1989-2011年武汉城市圈城乡道路网拓扑空间数据库,引入复杂网络统计特征量对武汉城市圈城乡道路网系统结构的空间异质性及其演化规律进行实证研究.武汉城市圈城乡道路网各拓扑指标值差异日益缩小,节点关联作用存在明显的空间异质化:节点度值空间分布较均匀,呈现点状特征和弱集聚性,表现出一定的“中心—边缘”和“等级圈层”的复合结构;节点紧密度值差异日益缩小,空间渐趋均衡化和离散化,也呈现典型的等级圈层格局;节点介数分布向心极化明显,但存在一定离心化趋势,呈侧“N”形伸展;节点平均路径长遵循距离衰减律,具有明显的时间惯性,与圈域城镇体系空间“靶形分布”一致;网络的集聚性空间差异显著,高簇系数节点空间弱集聚成半月形展布,低簇系数节点分布则较为离散,整个网络在空间上社团性比较明显,社团的等级规模差异较大.
基于1989-2011年武漢城市圈城鄉道路網拓撲空間數據庫,引入複雜網絡統計特徵量對武漢城市圈城鄉道路網繫統結構的空間異質性及其縯化規律進行實證研究.武漢城市圈城鄉道路網各拓撲指標值差異日益縮小,節點關聯作用存在明顯的空間異質化:節點度值空間分佈較均勻,呈現點狀特徵和弱集聚性,錶現齣一定的“中心—邊緣”和“等級圈層”的複閤結構;節點緊密度值差異日益縮小,空間漸趨均衡化和離散化,也呈現典型的等級圈層格跼;節點介數分佈嚮心極化明顯,但存在一定離心化趨勢,呈側“N”形伸展;節點平均路徑長遵循距離衰減律,具有明顯的時間慣性,與圈域城鎮體繫空間“靶形分佈”一緻;網絡的集聚性空間差異顯著,高簇繫數節點空間弱集聚成半月形展佈,低簇繫數節點分佈則較為離散,整箇網絡在空間上社糰性比較明顯,社糰的等級規模差異較大.
기우1989-2011년무한성시권성향도로망탁복공간수거고,인입복잡망락통계특정량대무한성시권성향도로망계통결구적공간이질성급기연화규률진행실증연구.무한성시권성향도로망각탁복지표치차이일익축소,절점관련작용존재명현적공간이질화:절점도치공간분포교균균,정현점상특정화약집취성,표현출일정적“중심—변연”화“등급권층”적복합결구;절점긴밀도치차이일익축소,공간점추균형화화리산화,야정현전형적등급권층격국;절점개수분포향심겁화명현,단존재일정리심화추세,정측“N”형신전;절점평균로경장준순거리쇠감률,구유명현적시간관성,여권역성진체계공간“파형분포”일치;망락적집취성공간차이현저,고족계수절점공간약집취성반월형전포,저족계수절점분포칙교위리산,정개망락재공간상사단성비교명현,사단적등급규모차이교대.
Based on urban-rural road network topological space database in Wuhan metropolitan area ( WMA), the complex network statistical characteristics are introduced and then spatial heterogeneity and its evolu- tion on topological structure of urban-rural road network (URRN) in Wuhan metropolitan area are performed. The study reveals that during 1989--2011, the differences among topological indexes of URRN had been shrinking but spatial heterogeneity still obviously exists on nodes connection. With punctual characteristics and weak gathering, spatial distribution of nodes degree values is uniform and certainly displays a composite construction of center-pe- riphery and rank-circle level. Differences among nodes closeness values reduces gradually, the spatial distribution tends to be equalizing and discretization and also presents the typical rank-circle level pattern. Spatial distribution of nodes betweenness values is concentric significantly, but there is a centrifugal tendency, the distribution takes the form of side-stretch "N". Average path length of nodes follows the distance decay rule, has obvious time iner- tia, and is consistent with the target distribution of circle urban system spatial pattern. Spatial differences and dis- tribution of the network agglomeration is remarkable, the high clustering coefficient nodes presents the half-moon shaped distribution with weak agglomeration, the low clustering coefficient nodes' distribution is quite separate, The entire network presents the obvious community structure in the space and the community size varies significant- ly